I was in the same boat. Trifocals for daily wear. Damn near impossible to focus on the pin. I ended up going to the optometrists office to order new frames and lenses. (The frames I was wearing daily would also interfere with my dominant eye when anchored.) The "shooting" glasses are entirely distance with small reading inserts (yes still bifocal) very low in the lense. I did install lenses in the peep to focus on the pin since the glasses are 90% distance. This is the best I can come up with. So far it's working. Growing old is not for the timid.